Translation:There are three chairs.
These tsu counters are used for counting small objects. 1 - hitotsu 2 - futatsu 3 - mittsu 4 - yottsu 5 - itsutsu 6 - muttsu 7 - nanatsu 8 - yatsu 9 - kokonotsu 10 - tou after this you use "ko" counters. This is from the course I follow for Japanese https://youtu.be/axtIcLbGzag?t=46m24s
Hope this helps :)
Kanji often has two (or more) different sounds they make depending on context and which other kanjis they are paired with. Most commonly we hear 三 as さん (san), but it can also be said as みつ (mitsu).
This link could be of help in understanding why there are two pronunciations. https://www.tofugu.com/japanese/onyomi-kunyomi/
i really wish they leave notes behind when you screw up a sentence...like explain that 三 has two pronunciations just like the rest of kanji symbols.
it feels like out of all the courses, this is where i feel like it's a literal "crash" course. hahaha i'm crashing everywhere tbh.
I believe the reading of 三 here is みっ so then the counter is the sound you hear but that's because it makes it みっつ (mittsu), not みつ. I am 90% sure on that, but obviously if I were a master at Japanese I wouldn't be here, lol.
If it matters, though, that is what the Japanese keyboard thinks, because it wanted to change みっつ to 三つ when I typed it, but not みつ.
In Japanese you use different counters depending on what you are counting, somewhat similar to English "slices of", "sticks of", "glasses of", "lengths of" etc. わ is a counter for birds (and rabbits), while つ is a general counter (or, technically, part of the set of originally Japanese counting words that do not need a counter).
The verb aru can mean both to exist and to have.
It actually started as two different words that were homophones,
有る aru - to have
在る aru - to exist
But neither of these kanji are used much for the verb anymore unless in a situation that needs clarification. They are both usually just written as ある. Since no kanji is used in this question, both answers are correct. :)
It is used as みっ when it is attached to a counter (I know that the little tau is silent, but it matters once the next character is added), I am not sure if that applies to all counters, since I don't know that many counters yet, but I know that counting people it uses さん so I am guessing it is case by case and you have to just memorize what to use when.
Btw any fun fact for any Naruto fans out there, the legendary sannin, sannin means 3 people, 三人. Number three + counter for people. It's a lot less cool once you know, or at least that's how I felt.